How is this mathematics?
I would got with WWI.
What was an effect of nationalism in Europe during the early 1900s?
Countries decided to adopt a common language.
Alliances between groups of nations led to World War I.
Countries formed a union to protect European political interests.
Countries learned to work together for the good of all Europe.
3 answers
This is not Maths whatsoever.
oops, sorry, I pressed the wrong one, my bad.